android动画的几种形式

android的动画有很多种，我今天主要讲的是用的比较基础的三种。帧动画补间动画和属性动画。

帧动画是比较简单的动画就是几个图片组装在一起轮流执行，从而形成动画效果。

xml布局

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.mahui.animationtest.FrameActivity">

<ImageView
android:id="@+id/imageView"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />

<ImageView
android:id="@+id/imageView2"
android:layout_marginLeft="200dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/loading_progress_anim"/>
<Button
android:layout_alignParentBottom="true"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="addanim"
android:text="加图片"/>
</RelativeLayout>

loading_progress_anim布局若将oneshot设为true则动画只执行一次，若设置为false则动画循环执行。duration是动画执行的时间。

<?xml version="1.0" encoding="utf-8"?>
<animation-list xmlns:android="http://schemas.android.com/apk/res/android"
android:oneshot="false">
<item android:drawable="@mipmap/loading_progress_1" android:duration="100"/>
<item android:drawable="@mipmap/loading_progress_2" android:duration="100"/>
<item android:drawable="@mipmap/loading_progress_3" android:duration="100"/>
<item android:drawable="@mipmap/loading_progress_4" android:duration="100"/>
</animation-list>

activity布局

public class FrameActivity extends AppCompatActivity {
private ImageView imageView,imageView2;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
imageView = (ImageView) findViewById(R.id.imageView);
imageView2= (ImageView) findViewById(R.id.imageView2);
AnimationDrawable animationDrawable = (AnimationDrawable)(imageView2).getDrawable();
animationDrawable.start();
}
public void addanim(View view){
AnimationDrawable anim=new AnimationDrawable();
for(int i=1;i<=4;i++){
int id=getResources().getIdentifier("loading_progress_"+i,"mipmap",getPackageName());
Drawable drawable=getResources().getDrawable(id);
anim.addFrame(drawable,300);
}
anim.setOneShot(false);
imageView.setBackgroundDrawable(anim);
anim.start();
}
}

不管用何种方式都必须在代码里进行启动。imageview2的启动方式很简单，直接获得红箭的deawable然后启动即可。另一个的启动略复杂些需要将图片根据id一个个加进去。设置时间及循环值，最后才能start，所以极力推荐用xml的形式使用帧动画。

补间动画。

页面布局

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:layout_centerInParent="true"
android:id="@+id/iv_dongxiao"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@mipmap/ic_launcher"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@id/iv_dongxiao"
android:layout_marginTop="20dp"
android:orientation="horizontal">
<Button
android:onClick="touming"
android:layout_weight="1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="透明"/>
<Button
android:onClick="xuanzhuan"
android:layout_weight="1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="旋转"/>
<Button
android:onClick="suofang"
android:layout_weight="1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="缩放"/>
<Button
android:onClick="weiyi"
android:layout_weight="1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="位移"/>
<Button
android:onClick="donghuaheji"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="动画合集"/>
</LinearLayout>
</RelativeLayout>

xml特效:

touming

<?xml version="1.0" encoding="utf-8"?>
<alpha xmlns:android="http://schemas.android.com/apk/res/android"
android:duration="200"
android:fillAfter="true"
android:fromAlpha="1.0"
android:repeatCount="2"
android:repeatMode="reverse"
android:toAlpha="0.9" >
</alpha>

xuanzhuan

<?xml version="1.0" encoding="utf-8"?>
<rotate xmlns:android="http://schemas.android.com/apk/res/android"
android:duration="2000"
android:fromDegrees="0"
android:pivotX="50%"
android:pivotY="50%"
android:repeatCount="2"
android:toDegrees="360" >
</rotate>

suofang

<?xml version="1.0" encoding="utf-8"?>
<scale xmlns:android="http://schemas.android.com/apk/res/android"
android:duration="2000"
android:pivotX="50%"
android:pivotY="50%"
android:fromX
1bb8c
Scale="0.2"
android:fromYScale="0.2"
android:toXScale="2.0"
android:toYScale="2.0" >
</scale>

weiyi

<?xml version="1.0" encoding="utf-8"?>
<translate xmlns:android="http://schemas.android.com/apk/res/android"
android:fromXDelta="10%p"
android:toXDelta="20%p"
android:fromYDelta="10%p"
android:toYDelta="20%p"
android:duration="2000"
android:repeatCount="2"
android:repeatMode="reverse">
</translate>

donghuaheji

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android" >
<rotate
android:duration="2000"
android:fromDegrees="0"
android:pivotX="50%"
android:pivotY="50%"
android:repeatCount="2"
android:toDegrees="360" >
</rotate>
<scale
android:duration="2000"
android:fromXScale="0.2"
android:fromYScale="0.2"
android:pivotX="50%"
android:pivotY="50%"
android:toXScale="2.0"
android:toYScale="2.0" >
</scale>

<alpha
android:duration="2000"
android:fillAfter="true"
android:fromAlpha="1.0"
android:repeatCount="2"
android:repeatMode="reverse"
android:toAlpha="0.5" >
</alpha>
</set>

activity

public class TweenActivity extends AppCompatActivity {
private ImageView iv_dongxiao;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.dongxiao);
iv_dongxiao= (ImageView) findViewById(R.id.iv_dongxiao);
}
public void touming(View view){
//xml
iv_dongxiao.startAnimation(AnimationUtils.loadAnimation(this,R.anim.touming));
// 1.0f代表完全不透明
// 0.0f代表完全透明
/*float fromAlpha = 1.0f;
float toAlpha = 0.0f;
AlphaAnimation aa = new AlphaAnimation(fromAlpha, toAlpha);

// 动画的配置
aa.setDuration(2 * 1000); // 动画持续多久
aa.setFillAfter(true); // 设为true之后,界面会停留在动画播放完时的界面
aa.setRepeatCount(1); // 设置动画重复的次数
aa.setRepeatMode(Animation.RESTART); // 动画重启或逆转，默认值为重启动画

// 启动动画
iv_dongxiao.startAnimation(aa);*/
}
public void xuanzhuan(View view){
//xml
iv_dongxiao.startAnimation(AnimationUtils.loadAnimation(this,R.anim.xuanzhuan));
// 旋转的起始角度
/*float fromDegrees = 0;
// 旋转的目标角度
float toDegrees = 360;

// 旋转的X轴中心点类型
// 分为三种类型：Animation.ABSOLUTE, Animation.RELATIVE_TO_SELF,Animation.RELATIVE_TO_PARENT.
// X轴的原点的类型（相对于自己而言还是相对于父容器而言）
int pivotXType = Animation.RELATIVE_TO_SELF;

// 旋转的X轴坐标的值，一般被指定为一个百分比数；1.0代表着100%
// 开始伸缩时的X轴的原点(例:0.5就是指以图片宽度的二分之一的位置作为X轴的原点)
float pivotXValue = 0.0f;

// Y轴的原点的类型
int pivotYType = Animation.RELATIVE_TO_SELF;
// 开始伸缩时的Y轴的原点
float pivotYValue = 0.0f;
*//*
*这里对pivotXValue和pivotYValue的值详细说明一下
*在Android中的坐标轴Y轴向下是增张的，X轴向右是增长的；
*pivotXValue在API中被说明为：旋转的X轴坐标的值，一般被指定为一个百分比数；1.0代表着100%
*也就是说，当我们指定为0.0f时，代表作是图片的X轴的0点；当指定为0.5f时，代表图片的width/2的位置；当被指定为1.0f时，代表图片的width位置；
*//*
RotateAnimation ra = new RotateAnimation(fromDegrees, toDegrees, pivotXType, pivotXValue, pivotYType, pivotYValue);

// 动画的配置
ra.setDuration(2 * 1000); // 动画持续多久
ra.setRepeatCount(1); // 设置动画重复的次数
ra.setStartOffset(2 * 1000); // 设置动画启动时间的偏移量，简单来说就是多长时间后启动动画

// 启动动画
iv_dongxiao.startAnimation(ra);*/
}
public void suofang(View view){
//xml
iv_dongxiao.startAnimation(AnimationUtils.loadAnimation(this,R.anim.suofang));

// 0.0f代表0点的位置；0.5f代表图片宽度的一半的位置；1.0f代表图片整个图片宽度的位置；2.0f代表整个图片宽度的2倍；
// 水平方向比例尺的起始值
/*float fromX = 0.0f;
// 水平方向比例尺的终值
float toX = 2.0f;

// 垂直方向比例尺的起始值
float fromY = 0.0f;
// 垂直方向比例尺的终值
float toY = 2.0f;

// X轴的原点的类型（相对于自己而言还是相对于父容器而言）
int pivotXType = Animation.RELATIVE_TO_SELF;
// 开始伸缩时的X轴的原点(例:0.5就是指以图片宽度的二分之一的位置作为X轴的原点)
float pivotXValue = 0.0f;
int pivotYType = Animation.RELATIVE_TO_SELF;
float pivotYValue = 0.0f;
ScaleAnimation sa = new ScaleAnimation(fromX, toX, fromY, toY, pivotXType, pivotXValue, pivotYType, pivotYValue);
sa.setDuration(2 * 1000);

// 整个动画会呈现，从左上角向右下加放大2倍
iv_dongxiao.startAnimation(sa);*/
}
public void weiyi(View view){
//xml
iv_dongxiao.startAnimation(AnimationUtils.loadAnimation(this,R.anim.weiyi));
// 位移的x轴起始坐标的类型(相对于自己还是相对父容器)
/*int fromXType = Animation.RELATIVE_TO_PARENT;
// x轴起点
float fromXValue = -0.5f;
int toXType = Animation.RELATIVE_TO_PARENT;
// X轴的终点
float toXValue = 0.5f;

int fromYType = Animation.RELATIVE_TO_PARENT;
// Y轴的起始坐标
float fromYValue = -0.5f;
int toYType = Animation.RELATIVE_TO_PARENT;
// Y轴的终点坐标
float toYValue = 0.5f;

TranslateAnimation ta = new TranslateAnimation(fromXType, fromXValue, toXType, toXValue, fromYType, fromYValue, toYType, toYValue);
ta.setDuration(2 * 1000);

iv_dongxiao.startAnimation(ta);*/
}
public void donghuaheji(View view){
//xml
iv_dongxiao.startAnimation(AnimationUtils.loadAnimation(this,R.anim.donghuaheji));
/*AnimationSet set = new AnimationSet(false);

ScaleAnimation  sa = new ScaleAnimation(0.1f, 2.0f, 0.1f, 2.0f, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);

sa.setDuration(3000); //设置动画的时间
sa.setRepeatCount(1); //设置动画的显示次数
sa.setRepeatMode(AlphaAnimation.REVERSE);//设置播放模式

RotateAnimation ra = new RotateAnimation(0, 360, Animation.RELATIVE_TO_SELF, 0.5f, Animation.RELATIVE_TO_SELF, 0.5f);

ra.setDuration(3000); //设置动画的时间
ra.setRepeatCount(1); //设置动画的显示次数
ra.setRepeatMode(AlphaAnimation.REVERSE);//设置播放模式

TranslateAnimation ta = new TranslateAnimation(Animation.RELATIVE_TO_PARENT, -0.5f, Animation.RELATIVE_TO_PARENT, 0.5f, Animation.RELATIVE_TO_PARENT, -0.5f, Animation.RELATIVE_TO_PARENT, 0.5f);
ta.setDuration(3000); //设置动画的时间
ta.setRepeatCount(1); //设置动画的显示次数
ta.setRepeatMode(AlphaAnimation.REVERSE);//设置播放模式

set.addAnimation(sa);
set.addAnimation(ta);
set.addAnimation(ra);

//播放动画
iv_dongxiao.startAnimation(set);*/
}
}

该特效就是通过xml控制相关的属性，

alpha透明，rotate旋转,scale缩放,translate移动位置。同样，实现效果可以通过代码和xml配置，建议直接用配置。

最后一个是属性动画。

xml的属性动画

scalex.xml

<?xml version="1.0" encoding="utf-8"?>
<objectAnimator xmlns:android="http://schemas.android.com/apk/res/android"
android:duration="1000"
android:propertyName="scaleX"
android:valueFrom="1.0"
android:valueTo="2.0"
android:valueType="floatType" >
</objectAnimator>

scale.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:ordering="together" >

<objectAnimator
android:duration="1000"
android:propertyName="scaleX"
android:valueFrom="1"
android:valueTo="0.5" >
</objectAnimator>
<objectAnimator
android:duration="1000"
android:propertyName="scaleY"
android:valueFrom="1"
android:valueTo="0.5" >
</objectAnimator>

</set>

xml_4_anim.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">

<Button
android:layout_below="@id/imageView"
android:layout_marginTop="100dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="scaleX"
android:text="横向放大" />
<Button
android:layout_below="@id/imageView"
android:layout_marginTop="100dp"
android:layout_marginLeft="100dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="scaleXandScaleY"
android:text="整体缩小" />

<ImageView
android:id="@+id/imageView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@mipmap/ic_launcher"
android:layout_centerVertical="true"
android:layout_centerHorizontal="true" />
</RelativeLayout>

Xml4AnimActivity

public class Xml4AnimActivity extends Activity{
ImageView imageView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.xml_4_anim);
imageView= (ImageView) findViewById(R.id.imageView);
}
public void scaleX(View view){
Animator animator= AnimatorInflater.loadAnimator(this,R.animator.scalex);
animator.setTarget(imageView);
animator.start();
}
public void scaleXandScaleY(View view){
Animator animator=AnimatorInflater.loadAnimator(this,R.animator.scale);
imageView.setPivotX(0);
imageView.setPivotY(0);
imageView.invalidate();
animator.setTarget(imageView);
animator.start();
}
}

setTarget里面有动画的对象，然后启动动画。

用代码实现上述功能。

object_main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:onClick="change"
android:layout_centerInParent="true"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@mipmap/ic_launcher"/>
</RelativeLayout>

activity

public class ObjectAnimActivity extends Activity{
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.object_main);
}
public void change(final View view){
ObjectAnimator animator=ObjectAnimator.ofFloat(view,"mh",1.0F,0.2F).setDuration(1000);
animator.start();
animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator animation) {
float cVal= (float) animation.getAnimatedValue();
view.setAlpha(cVal);
view.setScaleX(cVal);
view.setScaleY(cVal);
}
});
}
}

运用代码设置相关属性。

animator_set.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/id_container">

<ImageView
android:id="@+id/ball"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:src="@drawable/ball_shape" />

<Button
android:layout_below="@id/ball"
android:layout_marginTop="100dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="easyrun"
android:text="简单的多动画Together" />

<Button
android:layout_marginLeft="200dp"
android:layout_marginTop="100dp"
android:layout_below="@id/ball"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="playrun"
android:text="多动画按次序执行" />

</RelativeLayout>

activity

public class AnimatorSetActivity extends Activity{
private ImageView ball;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.animator_set);
ball= (ImageView) findViewById(R.id.ball);
}
public void easyrun(View view){
ObjectAnimator objectAnimator1=ObjectAnimator.ofFloat(ball,"scaleX",1.0f,2f);
ObjectAnimator objectAnimator2=ObjectAnimator.ofFloat(ball,"scaleY",1.0f,2f);
AnimatorSet animatorSet=new AnimatorSet();
animatorSet.setDuration(2000);
animatorSet.setInterpolator(new LinearInterpolator());
animatorSet.playTogether(objectAnimator1,objectAnimator2);
animatorSet.start();
}
public void playrun(View view){
float cx = ball.getX();
ObjectAnimator anim1 = ObjectAnimator.ofFloat(ball, "scaleX", 1.0f, 2f);
ObjectAnimator anim2 = ObjectAnimator.ofFloat(ball, "scaleY", 1.0f, 2f);
ObjectAnimator anim3 = ObjectAnimator.ofFloat(ball, "x",  cx ,  0f);
ObjectAnimator anim4 = ObjectAnimator.ofFloat(ball, "x", cx);
AnimatorSet animSet = new AnimatorSet();
animSet.play(anim1).with(anim2);
animSet.play(anim2).with(anim3);
animSet.play(anim4).after(anim3);
animSet.setDuration(1000);
animSet.start();
}
}

组合执行动效

视图动效。直接在控件上加配置

view_layout.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">

<ImageView
android:id="@+id/id_ball"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/ball_shape" />

<Button
android:layout_alignParentBottom="true"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="viewAnim"
android:text="视图动效" />

<Button
android:layout_marginLeft="100dp"
android:layout_alignParentBottom="true"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="propertyValuesHolder"
android:text="属性值 " />

</RelativeLayout>

activity

public class ViewAnimateActivity extends Activity{
private ImageView id_ball;
private float mScreenHeight;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.view_layout);
id_ball= (ImageView) findViewById(R.id.id_ball);

DisplayMetrics outMetrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(outMetrics);
mScreenHeight = outMetrics.heightPixels;
}
public void viewAnim(View view){
id_ball.animate().alpha(0).y(mScreenHeight/2).setDuration(1000).withStartAction(new Runnable() {
@Override
public void run() {
}
}).withEndAction(new Runnable() {
@Override
public void run() {
runOnUiThread(new Runnable() {
@Override
public void run() {
id_ball.setY(0);
id_ball.setAlpha(1.0f);
}
});
}
}).start();
}
public void propertyValuesHolder(View view){
PropertyValuesHolder pvhX = PropertyValuesHolder.ofFloat("alpha", 1f, 0f, 1f);
PropertyValuesHolder pvhY = PropertyValuesHolder.ofFloat("scaleX", 1f, 0, 1f);
PropertyValuesHolder pvhZ = PropertyValuesHolder.ofFloat("scaleY", 1f, 0, 1f);
ObjectAnimator.ofPropertyValuesHolder(id_ball, pvhX, pvhY,pvhZ).setDuration(1000).start();
}
}

直接在控件后面加上配置。

视图进出时的动效

layout_anim.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/id_container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >

<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="addBtn"
android:text="addBtns" />

<CheckBox
android:id="@+id/id_appear"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:checked="true"
android:text="APPEARING" />

<CheckBox
android:id="@+id/id_change_appear"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:checked="true"
android:text="CHANGE_APPEARING" />

<CheckBox
android:id="@+id/id_disappear"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:checked="true"
android:text="DISAPPEARING" />

<CheckBox
android:id="@+id/id_change_disappear"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:checked="true"
android:text="CHANGE_DISAPPEARING " />

</LinearLayout>

activity

public class LayoutAnimaActivity extends Activity implements CompoundButton.OnCheckedChangeListener {
private ViewGroup viewGroup;
private GridLayout mGridLayout;
private int mVal;
private LayoutTransition mTransition;

private CheckBox mAppear, mChangeAppear, mDisAppear, mChangeDisAppear;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.layout_anim);

viewGroup = (ViewGroup) findViewById(R.id.id_container);

mAppear = (CheckBox) findViewById(R.id.id_appear);
mChangeAppear = (CheckBox) findViewById(R.id.id_change_appear);
mDisAppear = (CheckBox) findViewById(R.id.id_disappear);
mChangeDisAppear = (CheckBox) findViewById(R.id.id_change_disappear);

mAppear.setOnCheckedChangeListener(this);
mChangeAppear.setOnCheckedChangeListener(this);
mDisAppear.setOnCheckedChangeListener(this);
mChangeDisAppear.setOnCheckedChangeListener(this);
mGridLayout=new GridLayout(this);
mGridLayout.setColumnCount(5);
viewGroup.addView(mGridLayout);
mTransition=new LayoutTransition();
mTransition.setAnimator(LayoutTransition.APPEARING,(mAppear.isChecked()?ObjectAnimator.ofFloat(this,"scaleX",0,1):null));
mGridLayout.setLayoutTransition(mTransition);
}

public void addBtn(View view){
final Button button=new Button(this);
button.setText((++mVal)+"");
mGridLayout.addView(button,Math.min(1,mGridLayout.getChildCount()));
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
mGridLayout.removeView(button);
}
});
}

@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
mTransition=new LayoutTransition();
mTransition.setAnimator(LayoutTransition.APPEARING,(mAppear.isChecked()? ObjectAnimator.ofFloat(this,"scaleX",0,1):null));
mTransition.setAnimator(LayoutTransition.CHANGE_APPEARING,(mChangeAppear.isChecked()?mTransition.getAnimator(LayoutTransition.CHANGE_APPEARING):null));
mTransition.setAnimator(LayoutTransition.DISAPPEARING,(mDisAppear.isChecked()?mTransition.getAnimator(LayoutTransition.DISAPPEARING):null));
mTransition.setAnimator(LayoutTransition.CHANGE_DISAPPEARING,(mChangeDisAppear.isChecked()?mTransition.getAnimator(LayoutTransition.CHANGE_DISAPPEARING):null));
mGridLayout.setLayoutTransition(mTransition);
}
}

加上或者去除button的时候根据checkbox的选中状态加上动效。

最后一个是用ValueAnimator

value_layout.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/id_container">

<ImageView
android:id="@+id/id_ball"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/ball_shape" />

<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:orientation="horizontal" >

<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="verticalRun"
android:text="垂直" />

<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="paowuxian"
android:text="抛物线" />

<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="fadeOut"
android:text="淡出且删除" />

</LinearLayout>

</RelativeLayout>

activity

public class ValueAnimatorActivity extends Activity{
private ImageView id_ball;
private float mScreenHeight;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.value_layout);
DisplayMetrics outMetrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(outMetrics);
mScreenHeight = outMetrics.heightPixels;
id_ball= (ImageView) findViewById(R.id.id_ball);
}

/**
* 垂直
* @param view
*/
public void verticalRun(View view){
/*ValueAnimator animator = ValueAnimator.ofFloat(0, mScreenHeight - mBlueBall.getHeight());
animator.setTarget(mBlueBall);
animator.setDuration(1000).start();
// animator.setInterpolator(value)
animator.addUpdateListener(new AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator animation) {
mBlueBall.setTranslationY((Float) animation.getAnimatedValue());
}
});*/
ValueAnimator animator=ValueAnimator.ofFloat(0,mScreenHeight-id_ball.getHeight());
animator.setTarget(id_ball);
animator.setDuration(1000).start();
animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator animation) {
id_ball.setTranslationY((Float) animation.getAnimatedValue());
}
});
}

/**
* 抛物线
* @param view
*/
public void paowuxian(View view){
ValueAnimator valueAnimator = new ValueAnimator();
valueAnimator.setDuration(3000);
valueAnimator.setObjectValues(new PointF(0, 0));
valueAnimator.setInterpolator(new LinearInterpolator());
valueAnimator.setEvaluator(new TypeEvaluator<PointF>() {
// fraction = t / duration
@Override
public PointF evaluate(float fraction, PointF startValue, PointF endValue) {
// x方向200px/s ，则y方向0.5 * g * t (g = 100px / s*s)
PointF point = new PointF();
point.x = 200 * fraction * 3;
point.y = 0.5f * 100 * (fraction * 3) * (fraction * 3);
return point;
}
});

valueAnimator.start();
valueAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator animation) {
PointF point = (PointF) animation.getAnimatedValue();
id_ball.setX(point.x);
id_ball.setY(point.y);
}
});
}

/**
* 淡出且删除
* @param view
*/
public void fadeOut(View view){
ObjectAnimator anim = ObjectAnimator.ofFloat(id_ball, "alpha", 0.5f);
anim.addListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
ViewGroup parent = (ViewGroup) id_ball.getParent();
if (parent != null)
parent.removeView(id_ball);
}
});

anim.addListener(new Animator.AnimatorListener() {
@Override
public void onAnimationStart(Animator animation) {}

@Override
public void onAnimationRepeat(Animator animation) {}
@Override
public void onAnimationEnd(Animator animation) {
ViewGroup parent = (ViewGroup) id_ball.getParent();
if (parent != null)
parent.removeView(id_ball);
}

@Override
public void onAnimationCancel(Animator animation) {}
});
anim.start();
}
}

源代码
https://github.com/Maliola/AnimationTest